I have followed many court cases in decades in Phoenix, been at trials and reported on them for decades up till FOSTA.
Under Arizona law you must offer money or other consideration for "sex" (which is defined). LE is good at getting you by phone, text or email to make it clear you are getting sex. Or you say the wrong thing like will this include xyz. The cop says yes, you arrive, you pay, you get handcuffed. There has to be an agreement of sex for money. Many of the stings in Phoenix area are the stop the sextrafficking of underaged where you go do an adults only site, think your responding to adult (in one case women had a wedding wring on) but in the conversation says something like can you pick me up a smoke on the way I am not old enough. Or, something like that. Guy offers money for sex and faces 10 years in prison as a child predator.
In the case of the Phoenix Goddess Temple which was in Court for 5 years with 30 women charged with criminal enterprise and given "Donald Advisements" of like 50 years in prison if didn't take a plea - since every time money given another money laundering charge. The case was questionable since only a "donation" was left after the fact on the way out. However, the website talked about illegal sex acts and a "suggested donation.". It was a very long trial (I was at most of it and did over 200 updates on a private email list). It took about an hour at the end for the jury to convict the leader who went to prison for about 3 years. All the rest pled guilty but to felonies for probation.
A funny part was when I was missing as a visitor for a while, the next time I returned at a break, the judge looked at me and said " we missed you lately" The defendants had lots of witness support including Dennis Hof (NV brothel fame originally from Phx area) the founder of Institute of Advanced Human Sexuality and many sex advocates all over the US. I had nice lunch with Hof etc.
I have always preferred the more sensual side and was one of the first to coin GFE on newsgroup with 300 baud dial up modems. It had nothing to do with a sex act. But a human real interaction as a person for the moment even if paid for and never see again. It has been perverted to mean illegal sex acts (in the US but I go to places like Canada without the legal issues). I love cuddling but with a naked body not clothed and even if no "sex" acts are involved.